This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.
%I A064255 #10 Oct 17 2019 06:08:15 %S A064255 498,1608,9156,21588,24696,26250,27360,42456,50670,93738,95736,111720, %T A064255 119046,121266,145020,149238,150570,153456,158340,173658,174990, %U A064255 198300,209178,211176,290208,305748,317070,317958,329058,332610,342378,351258,362580,398988,420966 %N A064255 Values of m such that N=(am+1)(bm+1)(cm+1) is a 3-Carmichael number (A087788), where a,b,c = 1,2,37. %C A064255 am+1, bm+1, cm+1 are primes and am | (N-1), bm | (N-1), cm |(N-1). %D A064255 Harvey Dubner (harvey(AT)dubner.com), personal communication, Jun 27 2001. %H A064255 Amiram Eldar, <a href="/A064255/b064255.txt">Table of n, a(n) for n = 1..10000</a> %t A064255 carmQ[n_] := CompositeQ[n] && Divisible[n - 1, CarmichaelLambda[n]]; Select[Range[10^5], AllTrue[(v = {1, 2, 37}*# + 1), PrimeQ] && carmQ[Times @@ v] &] (* _Amiram Eldar_, Oct 17 2019 *) %Y A064255 Cf. A087788. %K A064255 nonn %O A064255 1,1 %A A064255 _N. J. A. Sloane_, Sep 23 2001 %E A064255 Offset corrected and more terms added by _Amiram Eldar_, Oct 17 2019